:root {
  --bg: #1a1a2e;
  --card-bg: #16213e;
  --accent: #e94560;
  --accent2: #0f3460;
  --text: #eaeaea;
  --muted: #9a9ab0;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  padding: 16px;
}
.card {
  width: 100%;
  max-width: 480px;
  background: var(--card-bg);
  border-radius: 16px;
  padding: 32px 24px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
h1 { margin: 0 0 8px; font-size: 22px; text-align: center; }
h2 { font-size: 16px; margin: 16px 0 8px; }
.subtitle { color: var(--muted); text-align: center; margin: 0 0 24px; font-size: 14px; }
form { display: flex; flex-direction: column; gap: 12px; }
input[type=text] {
  background: var(--accent2);
  border: 1px solid #23345c;
  color: var(--text);
  padding: 14px 16px;
  border-radius: 10px;
  font-size: 18px;
  text-align: center;
  letter-spacing: 2px;
}
button {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 14px 16px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
}
button:disabled { opacity: 0.6; cursor: default; }
button.secondary { background: transparent; border: 1px solid var(--muted); color: var(--muted); }
.btn-row { display: flex; gap: 12px; margin-top: 16px; }
.btn-row button { flex: 1; }
.error {
  margin-top: 16px;
  background: rgba(233,69,96,0.15);
  border: 1px solid var(--accent);
  color: #ffb3c0;
  padding: 12px;
  border-radius: 10px;
  font-size: 14px;
}
.hidden { display: none !important; }
.dropzone {
  border: 2px dashed #34345c;
  border-radius: 12px;
  padding: 32px 16px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.dropzone.drag { border-color: var(--accent); color: var(--text); }
.progress-bar {
  background: var(--accent2);
  border-radius: 8px;
  height: 10px;
  overflow: hidden;
  margin-top: 16px;
}
.progress-fill { background: var(--accent); height: 100%; width: 0%; transition: width 0.2s; }
#progressText { text-align: center; margin-top: 8px; font-size: 13px; color: var(--muted); }
#accountBox p { margin: 4px 0; font-size: 14px; }
.spinner {
  width: 40px; height: 40px;
  border: 4px solid var(--accent2);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin: 16px auto;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
#statusText { text-align: center; color: var(--muted); }
#resultBox { margin-top: 16px; padding: 16px; border-radius: 10px; text-align: center; font-size: 15px; }
#resultBox.success { background: rgba(46,204,113,0.15); border: 1px solid #2ecc71; color: #a4f0c4; }
#resultBox.error { background: rgba(233,69,96,0.15); border: 1px solid var(--accent); color: #ffb3c0; }